文章目录
- CentOS7安装部署JDK11
- 一、前言
- 二、正文
-
- [1.卸载 Open JDK](#1.卸载 Open JDK)
- 2.安装JDK11
CentOS7安装部署JDK11
一、前言
- Linux 发行版:CentOS-7-x86_64-DVD-1804.iso
- JDK 版本:Java SE Development Kit 11.0.19
Java Archive:https://www.oracle.com/java/technologies/downloads/archive/
jdk11-archive-downloads:https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html
[CentOS] JDK安装部署:https://blog.csdn.net/u011424614/article/details/94610567
Java环境变量配置过程:https://blog.csdn.net/u011424614/article/details/103530318
CentOS基础操作命令:https://blog.csdn.net/u011424614/article/details/94555916
二、正文
1.卸载 Open JDK
- 查询原系统安装的 JDK
cmd
java -version
yum list installed | grep java
- 根据原系统安装的 JDK 进行卸载命令修改
cmd
#--卸载openjdk 1.7
yum -y remove java-1.7.0-openjdk.x86_64
yum -y remove java-1.7.0-openjdk-headless.x86_64
#--卸载openjdk 1.8
yum -y remove java-1.8.0-openjdk.x86_64
yum -y remove java-1.8.0-openjdk-headless.x86_64
2.安装JDK11
- 下载 JDK 压缩包,上传到服务器
- 本文下载的版本:
jdk-11.0.19_linux-x64_bin.tar.gz
jdk11-archive-downloads:https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html
- 创建安装目录,并解压
cmd
mkdir /opt/java
cd /opt/java
tar -zxvf jdk-11.0.19_linux-x64_bin.tar.gz
- 编辑
/etc/profile
cmd
vim /etc/profile
- 写入环境配置
cmd
export JAVA_HOME=/opt/java/jdk-11.0.19
export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin
- 更改立即生效
cmd
source /etc/profile
- 查看 JDK 版本
cmd
java -version